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Finding the Fourth Proportional to 719,066.86, 992,311.10 and 396,776.70

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Solution

The fourth proportional to 719,066.86, 992,311.10 and 396,776.70 is: 547,551.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,066.86 : 992,311.10 = 396,776.70 : x
  2. Step 2: Convert to fraction form
    719,066.86/992,311.10 = 396,776.70/x
  3. Step 3: Cross multiply
    719,066.86x = 992,311.10 × 396,776.70
  4. Step 4: Simplify right side
    719,066.86x = 393,725,923,631.37
  5. Step 5: Solve for x
    x = 393,725,923,631.37/719,066.86
  6. Step 6: Final answer
    x = 547,551.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.